The cisco rollover adapter can be used to convert any standard Ethernet cable into a serial rollover cable. The rollover adapter eliminates the need for carrying extra cables. Plugs into a RJ45 serial console port on switches and routers, and internally "rolls" the pins so that a straight through Cat5e or Cat6 patch cable can be used.
RJ45 Male to Female Rollover adapter
Pinning: 1-8, 2-7, 3-6, 4-5, 5-4, 6-3, 7-2, 8-1
Allows readily available Cat5e/Cat6 patch cables to be used
Use with Cisco RJ45 Serial ports
Allows standard Ethernet patch cables to become Cisco Rollover cables